Germantown is located in Washington county Wisconsin with a geographic area of 34.4 square miles. The total population in Germantown is 20,142 with 49.4% male and 50.6% female. Children under age 5 represent 6.0% of the population, under age 18 equal 24.6% of the population and over age 65 is 14.4% of the population. The median household income is $89,111, per capita income is $44,427. There are a total of 7,818 housing units with 76.7% owner occupied. Education includes 19.2% of residents that are high school graduates and 48.3% with a bachelor's degree or higher. The average temperature in Germantown in the summer is 66 degrees, and in the winter 17 degrees.
